Bahji A, Bastien G, Bach P, Choi JC, Le Foll B, Lim R, Jutras-Aswad D, Socías ME The association between self-reported anxiety and retention in opioid agonist therapy: findings from a Canadian pragmatic trial Can J Psychiatry PubMed

Mitra S, Choi JC, van Draanen J, Kerr T, Gilbert M, Hayashi K, Milloy MJ, Johnson C, Richardson L Socioeconomic marginalization and risk of overdose in a community-recruited cohort of people who use drugs: a longitudinal analysis Int J Drug Policy PubMed

Socías ME, Choi JC, Fairbairn N, Johnson C, Wilson D, DeBeck K, Brar R, Hayashi K Impacts of the COVID-19 pandemic on enrollment in medications for opioid use disorder (MOUD) in Vancouver, Canada: an interrupted time series analysis Int J Drug Policy PubMed

Mocanu V, Bozinoff N, Wood E, Jutras-Aswad D, Le Foll B, Lim R, Choi JC, Mok WY, Socías ME; OPTIMA Research Group within the Canadian Research Initiative in Substance Misuse Opioid agonist therapy switching among individuals with prescription-type opioid use disorder: secondary analysis of a pragmatic randomized trial Drug Alcohol Depend PubMed

Moallef S, Genberg B, Hayashi K, Mehta S, Kirk G, Choi J, DeBeck K, Kipke M, Moore R, Baum M, Shoptaw S, Gorbach P, Mustanski B, Javanbakht M, Siminski S, Milloy MJ Day-to-day impact of COVID-19 and other factors associated with risk of nonfatal overdose among people who use unregulated drugs in five cities in the United States and Canada Drug Alcohol Depend PubMed

King L, Hayashi K, Genberg B, Choi J, DeBeck K, Kirk G, Mehta SH, Kipke M, Moore RD, Baum MK, Shoptaw S, Gorbach PM, Mustanski B, Javanbakht M, Siminski S, Milloy MJ Prevalence and correlates of stocking up on drugs during the COVID-19 pandemic: data from the C3PNO Consortium Drug Alcohol Depend PubMed

Feder KA, Choi J, Schluth CG, Hayashi K, DeBeck K, Milloy MJ, Kirk GD, Mehta SH, Kipke M, Moore RD, Baum MK, Shoptaw S, Gorbach PM, Mustanski B, Javanbakht M, Siminski S, Genberg BL Factors associated with self-reported avoidance of harm reduction services during the COVID-19 pandemic by people who use drugs in five cities in the United States and Canada Drug Alcohol Depend PubMed

Norton A, Hayashi K, Johnson C, Choi JC, Milloy MJ, Kerr T Injecting drugs alone during an overdose crisis in Vancouver, Canada Harm Reduct J PubMed

MacKinnon L, Choi JC, Kennedy MC, Brar R, Milloy MJ, Hayashi K, Socías ME Medical detoxification for nonopioid substances is associated with lower likelihood of subsequent linkage to substance use disorder treatment J Addict Med PubMed

Socías ME, Wood E, Le Foll B, Lim R, Choi JC, Mok WY, Bruneau J, Rehm J, Wild TC, Bozinoff N, Hassan A, Jutras-Aswad D, OPTIMA Research Group within the Canadian Research Initiative in Substance Misuse Impact of fentanyl use on initiation and discontinuation of methadone and buprenorphine/naloxone among people with prescription-type opioid use disorder: secondary analysis of a Canadian treatment trial Addiction PubMed